xref: /netbsd-src/sys/external/bsd/drm2/include/drm/drm_writeback.h (revision 0bb1c6ed34ba4006f53efaed6376919d173ef818)
1 /*	$NetBSD: drm_writeback.h,v 1.6 2021/12/19 10:46:03 riastradh Exp $	*/
2 
3 /*-
4  * Copyright (c) 2018 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Taylor R. Campbell.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  * POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 #ifndef	_DRM_DRM_WRITEBACK_H_
33 #define	_DRM_DRM_WRITEBACK_H_
34 
35 #include <drm/drm_connector.h>
36 
37 struct dma_fence;
38 struct drm_connector;
39 struct drm_connector_state;
40 struct drm_framebuffer;
41 struct drm_writeback_connector;
42 
43 struct drm_writeback_connector {
44 	struct drm_connector	base;
45 };
46 
47 struct drm_writeback_job {
48 	struct drm_framebuffer	*fb;
49 	struct dma_fence	*out_fence;
50 };
51 
52 struct drm_writeback_connector *
53 	drm_connector_to_writeback(struct drm_connector *);
54 struct dma_fence *
55 	drm_writeback_get_out_fence(struct drm_writeback_connector *);
56 int	drm_writeback_prepare_job(struct drm_writeback_job *);
57 void	drm_writeback_cleanup_job(struct drm_writeback_job *);
58 int	drm_writeback_set_fb(struct drm_connector_state *,
59 	    struct drm_framebuffer *);
60 
61 #endif	/* _DRM_DRM_WRITEBACK_H_ */
62